I just purchased a Nexus 10. I have installed Calibre Companion and have successfully connected it as a wireless device to Calibre and can transfer epubs to it. I have a Calibre library with comic books in CBR/CBZ format as well. I would like to also transfer these using Calibre Companion. When I have the Nexus 10 connected as an MTP device, I was able to choose Configure This Device and add that CBR/CBZ was a supported format, and even to have Calibre put CBR/CBZ in a seperate folder. However, when I connect it as a wireless device, the Configure This Device dialog does not allow me to choose which formats are supported, and when I try to transfer CBR/CBZ it asks me if I want to auto convert files before uploading. If I choose Send Specific Format to Main Memory, I can only choose EPUB, MOBI, AZW3 and PDF.
Is this a limitation in Calibre Companion or is there a way for me to achieve this?

Excellent! I had not seen that entry in the settings dialog for CC. Figuring out who deals with what in the Calibre/CC relationship isn't entirely logical to me. But now it does exactly what I want, so thank you so much! You just earned your $3 that CC costs
Thank you for an awesome product.